Metallic rotary teasel and its support



Oct. 30, 1962 A. c. SCHOLAERT METALLIC ROTARY TEASEL AND ITS SUPPORT Filed Jan. 14, 1960 INVENTOR: A lber't C. Sc/lo/czerlf Arromuess United States Patent 6 3,060,544 METALLIC ROTARY TEASEL AND ITS SUPPORT Albert C. Scholaert, 92 Rue de IAniiral Courbet, Tourcoing, France Filed Jan. 14, 1960, Ser. No. 2,397 Claims priority, application France Jan. 16, 1959 1 Claim. (Cl. 26-31) This invention relates to improvements in the method on supporting rotary teasel assemblies on nap-raising machines.

In nap-raising machines of the prior art, the rotary teasels are usually fitted with axles which are supported in stationary brackets mounted on the machine. As the teasel operates, some fibres are drawn from the fabric and settle on and become entwined with both the teasel axles and the bearings. As a consequence, the bearings often become burred to an extent which hinder proper rotation of the rotary teasel or causes it to jam completely, which in turn leads to serious damage to the fabric undergoing treatment.

The fibres obviously would wind to a lesser extent around the teasel axles if the axle diameters were larger, but it is apparent that a substantial increase in the diameter of the teasel axles would lead to a corresponding increase in the size of the bearings supporting the axles and the brackets wherein the bearings are mounted, which in turn could create other problems regarding proper operation of the machine.

An object of this invention is to provide an improved rotary teasel which effectively eliminates the prospect of damage occurring to either the fabric being treated or to the teasel itself during operation.

To this end, according to the invention, the improved metallic rotary teasel carries axially at each end a hub adapted to be fitted over stationary pivots which act as supports for the metallic teasel.

Due to such an arrangement, the fibres no longer have a tendency to become entangled over the stationary pivots and, even should a few fibres settle on the same, the rotation of the metallic teasel would not be disturbed. Furthermore, the fibres no longer have any tendency to Wind around the hub since, for a pivot of a given diameter, and consequently, for a support of given size, the outer diameter of the hub is substantially larger than the diameter of the pivot, and the length of the fibres which might settle on the hub will not be long enough to wind therearound and become entangled therewith. It is therefore an important feature of the invention, that the circumference of each hub be of a magnitude at least equal to the length of the fibres in the fabric to be treated. In practice, this means giving the hubs a minimum diameter of about 7 mm. for ordinary work.

This invention also has for its object embodiments in eluding at least one of the following features:

One of the two pivots supporting each metallic teasel is remova-bly mounted in the member carrying it;

The removable pivot is carried in a bayonet-joint mounting;

Each hub is surrounded by a protecting flange rigid with the corresponding metallic rotary teasel.

The invention will be better understood from the following description and accompanying drawings which show, by way of example, a preferred embodiment of the invention.

3,060,544 Patented Oct. 30, 1962 ice In said drawings:

FIG. 1 is an axial cross-section of a metallic rotary teasel mounted in its supports, according to the invention.

FIG. 2 is a partial cross-section through line IIII of FIG. 1 of one of the supports alone.

FIG. 3 is a partial cross-section through line III--III of FIG. 2.

The metallic rotary teasel illustrated in the drawings includes a bobbin 1 of wood or other suitable material covered with a card-clothing 2. Each of the two ends of the bobbin 1 carries axially a short axle 3 having an outer hub 4. The diameter of each hub is sufficiently large to prevent fabric fibres from being wound thereon and torn out of the fabric. During operation it has a diameter that is such that the circumference of the hub is larger than the length of the fibres of the fabric being treated.

Between the inner end of the hub and the outer end of the bobbin is a stamped or deep-pressed protecting flange 5 which surrounds the hub. The bobbin 1 also carries, at one of its ends, a toothed wheel 6 by means of which the teasel is driven.

The metallic rotary teasel is held by mounting its two hubs 4 at pivots 8, 9, respectively. The pivots are mounted on two supporting brackets 11, 12 which are secured to a section 13 of the treating machine.

One of the two pivots, for instance the pivot 8, is integral with the corresponding support or bracket 11, while the other pivot 9 is removably mounted in an opening of the bracket 12, for instance by means of a bayonet-joint connection. To this end, a pin 14 is mounted in the pivot 9 with its ends projecting therefrom. When the pivot is inserted through the bracket 12, the pin ends ride in longitudinal grooves 15 formed in the bracket 12 until the pin ends pass the inner face of the opening in the bracket 12. The pivot 9 is then rotated until the pin ends oppose and engage the notches 16 located in the inner face of the bracket 12. A spring 17 encloses the pivot 9, between the outer surface of the bracket 12 and the inner surface of a control knob 18 rigid with the pivot and holds the latter in its locked position on the bracket.

Such a bayonet-joint mounting allows an easy positioning and removal of the metallic rotary teasel with reference to its brackets and its removal in a practically instantaneous manner, while ensuring its safe holding in position during operation.

In one embodiment, each axle 3 and its hub 4 are cast together under pressure so as to form a perfect unit with the bobbin 1 and to thus improve reliability of operation.

Obviously, the invention is not limited to the embodiment described and illustrated, which has merely been given by way of example and various modifications may be brought within the scope of the accompanying claim.

What I claim is:

In a nap-raising machine, a metallic rotary teasel having an axle, two opposed end hubs firmly connected to opposite ends of said axle, two cupped flanges enclosing said hubs and connected to said axle ends, a bracket, a pivot integral with said bracket and loosely engaging one of said end hubs, another bracket, said bracket having an opening therein, another pivot loosely engaging the other of said end hubs, a shank integral with said other pivot and having a larger diameter than said pivot, a knob 3 4 carried on the end of said shank, a pin extending radially References Cited in the file of this patent through said shank, the ends of said pin protruding beyond UNITED STATES PATENTS the surface of said shank, a portion of said shank being adapted to fit in the opening of said other bracket, said 522-497 Schwelnfiflelsch July 3, 1894 other bracket having notches for receiving the ends of 5 1,863,170 Jasgur July 19, 1932 said pin, and an expansion spring enclosing said shank FOREIGN PATENTS and engaging said knob and one side of said other bracket for removably supporting said other pivot on said bracket in axial alignment with the first-mentioned pivot.

11,919 Great Britain 1899 506,962 Great Britain June 7, 1939 

